Hager 40A 30mA Type B RCCB 1P+N for Heat Pumps

Hager CDB540HP — 40A 30mA Type B 1P+N RCCB for Heat Pumps

The Hager CDB540HP is a robust 40A Type B RCCB designed specifically for heat pump systems and other inverter-driven loads that require advanced residual current protection. With 30mA earth leakage sensitivity and full detection of smooth DC, pulsating DC and AC fault currents, it offers enhanced safety where conventional Type AC or Type A devices are not sufficient.

Its 10kA conditional short-circuit rating, wide −25°C to +70°C operating temperature range and long mechanical endurance make it suitable for demanding domestic and light-commercial electrical installations. The compact 4-module width and aligned screw terminals also support quick, tidy DIN rail installations.

Heat Pump-Ready Protection with Type B RCD Technology: Modern heat pumps often use inverter drives that can generate smooth DC residual currents. A standard RCD cannot reliably detect these faults — but the CDB540HP, with Type B protection, ensures full coverage to safeguard both equipment and users.

Reliable Performance Across Extreme Conditions: Rated for continuous operation from −25°C to +70°C, this RCCB performs reliably in utility rooms, garages, plant spaces and unheated outbuildings. Its 10kA conditional short-circuit rating delivers confidence for installers working on high-demand systems.

Fast, Straightforward Installation: With DIN rail compatibility, biconnect bottom terminals and aligned screw terminals, the CDB540HP is optimised for efficient installation in consumer units and distribution boards. High dielectric strength and a durable mechanical life of 20,000 operations ensure long-term reliability.

Key Features of the Hager 40A 2 Pole Heat Pump RCD Include:

• Type B Residual Current Protection Suitable for Heat Pump Applications
• 40A Rated Current for Higher-Demand Heat Pump and Inverter Circuits
• 30mA Earth Leakage Sensitivity Offering Enhanced Shock Protection
• 10kA Conditional Short-Circuit Rating to EN61008-1
• Wide Operating Temperature Range of -25°C to +70°C for Harsh Install Environments
• Four-Module Width for Easy Integration Into Consumer Units
• DIN Rail Mounting for Fast Installation
• Aligned Screw and Biconnect Terminals for Streamlined Cable Termination
• IP20 Ingress Protection Suitable for Enclosed Distribution Boards
• Durable Construction with 20,000 Mechanical Operations
• Height: 85mm
• Width: 72mm
• Depth: 70mm 

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